软土的工程性质较差,邻近桩基的地面土体堆载会使桩侧土体产生固结沉降,进而桩身上部产生桩侧负摩阻力,负摩阻力的下拉作用对桩基的受力特性及沉降有较大影响.以甬台温高速公路复线翁垟高架桥21#墩群桩基础为研究对象,建立考虑桩-土接触的Midas GTS/NX三维有限元数值模型,研究在成桥状态下桩基两侧对称和单侧非对称邻近堆载时高架桥超长桩基在不同堆载等级下的受力特性.

建筑力学是建筑工程技术专业的一门重要专业基础课,在整个土木学科体系中起着关键作用,也是一门学生公认的难学课程.新教改后该科学分的下降,使教师和学生面临着更大挑战.因此,教师要积极引入OBE教学理念,并创造条件,不断改进教学方法,以教育成果为导向,把案例教学和实践教学引入专业知识教学,引导学生用适合自己的方式学习.

Soft clay roadbed has disadvantages of easy instability and large settlement.We take measures of pre-loading drainage plate to treat the roadbed accordingly.Based on equivalent sand-wall method and Cambridge model,a plane FEM model is established for pre-loading roadbed treatment in a sea reclamation engineering at Taizhou Bay.The influence of length and distance of plastic drainage plate on the loading velocity,the pre-loading time and the settlement amount under different loading heights are analyzed.The results show that the pre-loading time is significantly affected by the length of drainage plate;even road settlement occurred after pre-loading period,which ensures the construction quality.

Comparative analysis between CECS146∶2003 and ACI440F code details is conducted on RC structures strengthened with externally bonded CFRP sheet,in particular,their material property indices and equations for design.The increments of flexural capacity for sections with different reinforcement volume strengthened with the same amount of CFRP sheet are comparatively studied between the two codes through parameter analysis.It indicates that the CECS146∶2003 gives a higher result than that of the ACI440F when the total volume of steel reinforcement and CFRP is lower or extremely higher.However,very close results are got by the two codes when the total reinforcement is moderate because the effective strain of CFRP that calculated by CECS146∶2003 code at the ultimate state,is reduced near to that by ACI440F code due to the application of partial safety factors of the concrete and steel reinforcement.

It is difficult to calculate in construction measurement.Mistakes are often made in manual calculations and it's not intuitive to manual calculation.In this article,construction measurement with CAD marking and querying is presented and it is applied to automatically implement construction measurement in civil engineering.CAD marking and querying has high accuracy as well as implementation easily,quickly and directly.

Based on the geological conditions of soft soil area about Wenzhou-Taizhou in Zhejiang,action effects of flexible pile column in common-span bridge abutments are introduced.Besides,some effect factors on horizontal displacements in bridge abutments are analyzed by the means of m method,including filler bulk density,pile diameter,pile space and so on.The change rules are obtained.The results show that the more horizontal displacements of bridge abutments are avoided because parameters are reasonably chosen.Then,engineering quality and safety are ensured.

对某软土地区滨河路段沥青路面的纵向裂缝进行调查分析,利用简化B ishop法分析路基的稳定性,得出了路基在填土不高的情况下失稳的原因,提出裂缝的补救措施,并对今后类似工程提出设计建议。

The paper analyzes reasons of the sunk well and overturning in the main sewer in the construction process of the soft soil of coastal areas,compares the influence of all sorts of parameters on improving the stability of the soil wall of the sunk well,points out the addition of the height of the sunk well can be an effective measure,and indicates the internal reasons,so as to reduce the similar accidents.

Combining the teaching situation of architectural mechanics in high vocational college and engineering education theory,the paper takes architectural mechanics reform on the base of scaffold,it mainly introduces content, organizing form,evaluation methods,as well as problems in the course,thus reach teaching goal of architectural mechanics.

Combining the teaching situation of architectural mechanics in high vocational college and engineering education theory,the paper takes architectural mechanics reform on the base of scaffold,it mainly introduces content, organizing form,evaluation methods,as well as problems in the course,thus reach teaching goal of architectural mechanics.

1工程概况 某滨海城市主干道桥梁,采用单跨25m简支梁桥,桥面宽40m,车行道宽31m,采用重力式桥台,承台下为双排钻孔灌注桩基础,桥台结构尺寸如图1所示.

为分析某软土地区配桩重力式桥台台身水平裂缝成因,文章应用m法计算了承台位移,发现水平裂缝是由承台水平位移和转角位移综合作用的结果,并提出承台转角位移是不可忽视的重要因素,最后给出了相应的防冶措施。

In the research on pile's lateral capacity,the effects of pile cap are seldom considered.In this paper the lateral force is simulated by ABAQUS in the pile with a cap or without a cap,It draws a very useful conclusion that the cap makes great contributions to the lateral capacity of the pile.

This paper probes into the feasibility of concrete pump and sludge pump applied in the construction of works on coastal shoal from several aspects such as the performances of concrete pump and sludge pump, and pump sending course, etc.

The soft subgrade has low strength by itself.Reinfoced by cement-mixed piles,however,the earth between the piles shares the load of the structure above with the piles,forming a composite subgrade.Compared to other kinds of piles,the cement-mixed pile demonstrates its several strong points,and so it is widely used in subgrade engineering.The calculation methods for the composite subgrade are given,under a consideration that the strength of a composite subgrade is influenced by its composition of earth and physical properties.